Breakdown of Вот бы он выиграл в лотерею и купил нам билеты в рай.
и
and
он
he / it (for a masculine noun) / it (for a neuter noun)
мы
we
в
in / to (direction)
Questions & Answers about Вот бы он выиграл в лотерею и купил нам билеты в рай.
Why are the verbs выиграл and купил in the past tense when the sentence is about a future wish?
The particle Вот бы ("if only" or "I wish") creates a hypothetical, optative mood. It requires either the past tense or an infinitive. Even though the desired action hasn't happened yet, the past tense form is mandatory here, which mirrors the English subjunctive: "If only he won".
Could we use imperfective verbs after Вот бы instead of the perfective выиграл and купил?
Yes, but it would change the meaning. The perfective aspect is used here because the speaker desires a one-time, successfully completed result (he wins the lottery, then he buys the tickets). If you used imperfective verbs (выигрывал, покупал), you would be wishing for an ongoing state or habit, like "If only he always won lotteries and regularly bought us tickets."
Why do we use the preposition в and the Accusative case in выиграл в лотерею instead of just making "lottery" the direct object?
In Russian, lotteries, games, and sports are treated as activities you enter into. Just as you say играть в (to play a game/sport) with the Accusative case, you also use в + Accusative for winning them. You are literally saying he "won into the lottery."
Why is в рай in the Accusative case instead of the Prepositional case?